double racketPrice = double.Parse(Console.ReadLine());
double sneakersPrice = racketPrice / 6;

int numberOfRackets = int.Parse(Console.ReadLine());
int numberOfSneakers = int.Parse(Console.ReadLine());

//сумата без екипировката
double sum = racketPrice * numberOfRackets + sneakersPrice * numberOfSneakers;
//сумата на екипировката
double equipmentPrice = sum * 0.2;
//общата сума
sum += equipmentPrice;

Console.WriteLine($"Price to be paid by Djokovic {sum / 8:f00}");
Console.WriteLine($"Price to be paid by sponsors {sum * 7/8:f00}");